Adding my own style to the built-in datagrid auto-format list

I am updating a website that has a large number of datagrids and I want to change the colours on each one to the new standard. It will be really tedious and time-consuming to edit each datagrid, so is there a way I can add my style to the built-in list, and simply use auto-format on them?

CSS solutions work fine if the parts of the datagrids (items, headers, footers etc) have consistent CssClass names across the site, but they don't, and I'm trying to avoid editing every datagrid in that much detail to make them consistent.

Any other ideas? Surely there must be a way of modifying the built-in styles?

I know it's more work, but I think it will pay off for you in the long run.

Make a css file that defines your standard styles.
Add the css link tag (as already mentioned) to each page.
Then edit each datagrid and add the new standard classes to the CssClass of each datagrid.
Finally, remove as much extraneous style info as you can from your datagrids.

Make the effort once, and you won't have to worry about it in the future when you need to add datagrids, or change your styles, or whatever.

I know the benefits of using a style sheet. The problem is that the datagrids seem to have been formatted by a team of madmen. They use different style names all over the place. I'm trying to cut down on the work involved to get back to a standard.

I 've tried to find a way to add a custom auto format scheme to the visual studio but I didn't find anything, not even relevant Stylesheet files... It's probably an assembly... Weird... I assume that some Visual studio pluggins should have some tools to add a custom scheme...
In windows forms there is a class caled DatagridStyle or so.. but for Web Control nothing.

You can inherit your own datagrid which will implement the cssclasses that you want (and ignore the developer-entered cssclasses), and then you'll only need to change the base datagrid definition without touching anything else.

However, this is a pretty ugly solution, with inherent presentation data loss (the developer-entered cssclasses now and in the future), even though it's lets you define your own behavior.

The best way is to just go over them all once and "standardize" them. Avoid the pitfalls. Sometimes the better solution requires a bit more effort.

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